diff -urNp strongswan-5.1.1-patched/configure.ac strongswan-5.1.1-current/configure.ac
--- strongswan-5.1.1-patched/configure.ac 2013-11-01 13:14:29.753922017 -0400
+++ strongswan-5.1.1-current/configure.ac 2013-12-02 15:33:47.530389926 -0500
@@ -20,7 +20,17 @@
# ============================
AC_INIT([strongSwan],[5.1.1])
-AM_INIT_AUTOMAKE([tar-ustar subdir-objects])
+AM_INIT_AUTOMAKE(m4_esyscmd([
+ echo tar-ustar
+ echo subdir-objects
+ case `automake --version | head -n 1` in
+ *" 1.9"*);;
+ *" 1.10"*);;
+ *" 1.11"*);;
+ # don't use parallel test harness in 1.12 and up
+ *) echo serial-tests;;
+ esac
+]))
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
AC_CONFIG_MACRO_DIR([m4/config])
AC_CONFIG_HEADERS([config.h])